/Engine/Source/Runtime/Engine/Classes/Engine/AssetManager.h
Warn about this primary asset id being missing, but only if this is the first time this session
virtual void WarnAboutInvalidPrimaryAsset ( const [FPrimaryAssetId](API\Runtime\CoreUObject\UObject\FPrimaryAssetId) & PrimaryAssetId, const [FString](API\Runtime\Core\Containers\FString) & Message ) const